52643925361 has 4 divisors (see below), whose sum is σ = 52690555300. Its totient is φ = 52597295424.

The previous prime is 52643925353. The next prime is 52643925379. The reversal of 52643925361 is 16352934625.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33363214336 + 19280711025 = 182656^2 + 138855^2 .

It is a cyclic number.

It is not a de Polignac number, because 52643925361 - 2³ = 52643925353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52643925311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23313276 + ... + 23315533.

It is an arithmetic number, because the mean of its divisors is an integer number (13172638825).

Almost surely, 2^52643925361 is an apocalyptic number.

It is an amenable number.

52643925361 is a deficient number, since it is larger than the sum of its proper divisors (46629939).

52643925361 is a wasteful number, since it uses less digits than its factorization.

52643925361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46629938.

The product of its digits is 1166400, while the sum is 46.

The spelling of 52643925361 in words is "fifty-two billion, six hundred forty-three million, nine hundred twenty-five thousand, three hundred sixty-one".